diff --git a/opendbc/can/tests/test_checksums.py b/opendbc/can/tests/test_checksums.py
index 52ac79398b..8dc576b6ea 100644
--- a/opendbc/can/tests/test_checksums.py
+++ b/opendbc/can/tests/test_checksums.py
@@ -2,6 +2,7 @@
 from opendbc.can.parser import CANParser
 from opendbc.can.packer import CANPacker
 
+REPEAT_COUNT = 1000000
 
 class TestCanChecksums:
 
@@ -48,7 +49,9 @@ def verify_vw_mqb_crc(self, subtests, msg_name: str, msg_addr: int, test_message
 
         modified = copy.deepcopy(expected)
         modified.pop(crc_field, None)
-        modified_msg = packer.make_can_msg(msg_name, 0, modified)
+        modified_msg = None
+        for _ in range(REPEAT_COUNT):
+          modified_msg = packer.make_can_msg(msg_name, 0, modified)
 
         parser.update_strings([0, [modified_msg]])
         tested = parser.vl[msg_name]